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Processing method of thin and long aluminium alloy thin-walled cylinder

A technology of thin-walled cylinders and processing methods, applied in metal processing equipment, manufacturing tools, non-electric welding equipment, etc., can solve the problems of large aspect ratio of the shell, difficult to coordinate processing, and thin walls, etc., to achieve high material utilization and improve Machining accuracy, the effect of ensuring product quality

Active Publication Date: 2012-06-27
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) The shell itself has a large length-to-diameter ratio, thin walls, and weak rigidity;
[0010] (2) There is deformation and shrinkage in the welding of the shell, and the height dimension after welding, the amount of pressure at the weld, the roundness of the cabin and the end frame, etc. are different from the theoretical state;
[0012] (4) There is no machining allowance in the inner hole, and it is difficult to coordinate during processing

Method used

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  • Processing method of thin and long aluminium alloy thin-walled cylinder
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  • Processing method of thin and long aluminium alloy thin-walled cylinder

Examples

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Embodiment 1

[0045] Embodiment 1, the processing method of aluminum alloy slender and thin-walled cylinder, comprises sequentially:

[0046] 1) Manufacturing steps of semi-finished parts:

[0047] like figure 1 As shown, the shape of the molding shell 1 is a slender thin-walled cylinder with a curved shape, forming a semi-finished product 1;

[0048] like figure 2 , image 3 As shown, the shape of the forming end frame 2 is a circular plate, and a plurality of holes with different diameters are processed on the end surface to form a semi-finished product 2;

[0049] 2) Supporting steps:

[0050] Complete set of shell 1 and end frame 2;

[0051] 3) Alkaline washing steps:

[0052] Clean the supporting parts;

[0053] 4) Trial installation steps, the sequence includes the following process:

[0054] 4.1 Use acetone or alcohol to clean the fitting surface and accessory area of ​​the parts;

[0055] 4.2 Measure the inner diameter D1 of shell 1 and the fit surface size and interferenc...

Embodiment 2

[0082] Embodiment 2, the processing method of aluminum alloy slender and thin-walled cylinder, comprises:

[0083] 1) Manufacturing steps of semi-finished parts:

[0084] like figure 1 As shown, the shape of the molding shell 1 is a slender thin-walled cylinder with a curved shape, forming a semi-finished product 1;

[0085] like figure 2 , image 3 As shown, the shape of the forming end frame 2 is a circular plate, and a plurality of holes with different diameters are processed on the end surface to form a semi-finished product 2;

[0086] 2) Matching steps: complete set of shell 1 and end frame 2;

[0087] 3) Alkaline washing steps:

[0088] Clean the supporting parts;

[0089] 4) Trial installation steps, the sequence includes the following process:

[0090] 4.1 Use acetone or alcohol to clean the fitting surface and accessory area of ​​the parts;

[0091] 4.2 Measure the inner diameter D1 of shell 1 and the fit surface size and interference of end frame 2 respecti...

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Abstract

The invention provides a processing method of a thin and long aluminium alloy thin-walled cylinder and belongs to a mechanical processing method of a slewing structure, and the processing method is used for carrying out friction stir welding on a shell blank so as to process and mold the shell blank into a bent generatrix thin-walled cylinder shell. The method provided by the invention can be used for solving the problems of poor shell generatrix displacement, poor shell roundness, uneven wall thickness, clearance at welding seams, unqualified performance detection and incapability of ensuring use requirements in the existing processing method. The method comprises a part manufacturing step, a matching step, a caustic washing step, a trial assembly step, a positioned welding step, a friction stir welding step, a welding seam polishing step, a stress-relief annealing step, an X-ray detection step, a shape processing step, a ultrasonic flaw detection step and an end face hole processingstep. The method provided by the invention can be used for solving the problems of poor shell roundness, uneven wall thickness, clearances at the welding seams and unqualified performance detection in the existing processing method, improving the shell processing precision and reliably ensuring the product quality.

Description

technical field [0001] The invention belongs to the technical field of revolving structure processing, and in particular relates to a processing method for an aluminum alloy thin-walled cylindrical structure for forming a plurality of aluminum alloy semi-finished parts into an integral revolving structure. Background technique [0002] The part structure is a slender thin-walled cylindrical shell. The head of the product is small and semicircular, the tail is cylindrical, and the end face of the tail is in a semi-closed state. The data fitting curve of the linear parameter table is obtained corresponding to the normal offset to ensure that the shell wall thickness is equal; there are multiple annular ribs with equal axial spacing on the inner wall of the shell, which are obtained by the normal offset of the inner wall of the shell. The long diameter of the shell is relatively large and the wall is thin, so the rigidity is poor, it is easy to deform when clamping, and it is d...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23K20/12
Inventor 李艳梅唐众民任延玲吴顺斌梅晓军万方云
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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